A wire is bent into three circular segments, each of radius r-10 cm, each segment is quadrant of a circle, ab
lying in the xy plane, and bc lying in the yz plane and ca lying in the zx plane.
If a uniform B points in the positive x-direction,
a) what is the magnitude of the emf developed in the wire when B increases at a rate of 3.0 mT/s.
b) what is the direction of the current in segment cb?
I

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.